On Minix 3.1.8, there are several issues:
1) openpty() exists in libutil, but its declaration in <util.h> is #ifdefed
out.
2) <util.h> is not self-contained, you need to write
#include <stdarg.h>
#define _BSD_VA_LIST_ va_list
#include <util.h>
3) openpty() fails with error code ENOENT.
4) When I add this code to posix_openpt.c
# if defined __minix
if (master < 0)
{
/* Try various master names of Minix: /dev/pty[p-q][0-9a-f] */
int char1;
int char2;
for (char1 = 'p'; char1 <= 'q'; char1++)
for (char2 = '0'; char2 <= 'f'; (char2 == '9' ? char2 = 'a' : char2++))
{
char master_name[32];
sprintf (master_name, "/dev/pty%c%c", char1, char2);
master = open (master_name, O_RDONLY);
if (master >= 0)
return master;
}
}
# endif
every open() call fails with EIO.
In summary, ttys on Minix appear to be completely broken, an no-one cares.
Bruno
--
In memoriam Eduard Brücklmeier <http://en.wikipedia.org/wiki/Eduard_Brücklmeier>
